Solar Net Metering Policies by State
Solar Net Metering Policies by State: The Definitive Guide for 2026
If you are researching solar panels in the United States, one policy determines your financial return more than any other factor: net metering. In May 2026, the landscape is more fragmented than ever. Twenty-two states still mandate full retail net metering, while 18 states have shifted to net billing or avoided-cost rates. The difference between these policies can mean a payback period of 5 years versus 15 years on the exact same system.
This guide breaks down every major state policy, the hidden fees that erode your savings, and exactly how to calculate your ROI under any rate structure. We are Solar Panel Install Pros, and we have installed over 5,000 systems across 12 states. This is the information we use every day to advise our customers.
Net Metering vs. Net Billing vs. Buy-All, Sell-All
Before we dive into individual states, you must understand the three core rate structures that exist in the U.S. market today. The terminology is often confused, even by installers.
Full Retail Net Metering (NEM)
Under true net metering, your utility credits you for every kilowatt-hour (kWh) of excess solar energy you send to the grid at the full retail rate. If you pay $0.30/kWh for grid power, you receive a $0.30/kWh credit for your solar exports. This is the gold standard for solar economics. As of 2026, 22 states plus Washington D.C. still mandate this policy, including Florida, New Jersey, Massachusetts, and Ohio.
Net Billing (Reduced Compensation)
Net billing is increasingly common. Under this structure, your utility credits you for excess energy at a rate lower than retail—typically the utility’s “avoided cost” or a fixed wholesale rate. California’s NEM 3.0 is the most prominent example, paying approximately $0.08/kWh for exports while retail rates are $0.30–$0.40/kWh. Hawaii, Indiana, and Kentucky have similar structures. Net billing dramatically changes the value proposition for solar-only systems.
Buy-All, Sell-All (Separate Metering)
In this model, your solar production and home consumption are completely separated. You sell 100% of your solar power to the utility at a wholesale rate (often $0.02–$0.04/kWh), and you buy 100% of your home electricity at the retail rate. This is the worst economic structure and is rare for residential systems, though some rural electric cooperatives use it. Never install a system under this policy without a battery.
State-by-State Policy Status: The Top 10 Markets
These ten states represent over 70% of U.S. residential solar installations. Their policies dictate national trends.
California: NEM 3.0 and the Battery Revolution
California transitioned from NEM 2.0 to NEM 3.0 in April 2023. The change was seismic. Under NEM 2.0, customers received full retail credit (~$0.30/kWh) for exports. Under NEM 3.0, the export credit dropped to an average of $0.08/kWh, tied to the utility’s avoided cost. The result? Residential solar installations dropped 40–50% in Q1 2024 compared to Q1 2023, according to Wood Mackenzie.
However, battery attach rates in California surged to over 80% in 2025. Homeowners now store their solar energy during the day and use it at night, avoiding low export rates. If you are in California and do not add a battery, your payback period extends from 5–7 years under NEM 2.0 to 12–15 years under NEM 3.0. With a battery, payback is 8–10 years.
Grandfathering: Customers who installed under NEM 2.0 before April 2023 are grandfathered for 20 years. This is a valuable asset—if you buy a home with an existing NEM 2.0 system, you inherit that rate.
Texas: The Utility-Specific Trap
Texas has no state-level net metering mandate. This is the single most misunderstood policy in the country. Each of the dozens of Retail Electric Providers (REPs) sets its own buyback rate. Some pay full retail, most pay wholesale, and a few pay nothing at all.
Here is the reality for the major Texas utilities in 2026:
- Green Mountain Energy: Pays $0.11/kWh for exports (net billing).
- TXU Energy: Pays $0.06/kWh for exports (net billing).
- Reliant: Pays $0.075/kWh for exports (net billing).
- CPS Energy (San Antonio): Full retail net metering ($0.11/kWh).
- Austin Energy: Full retail net metering ($0.12/kWh).
In Texas, your solar ROI depends entirely on which utility serves your home. You can switch REPs, but you are often locked into a 12-month contract. Always check your specific utility’s buyback rate before signing a solar contract.
New York: VDER and the Value Stack
New York uses a complex system called the Value of Distributed Energy Resources (VDER) or “Value Stack.” Instead of a simple retail credit, utilities calculate compensation based on location, time of day, and grid benefits. For residential systems under 750 kW, the compensation averages $0.08–$0.12/kWh—significantly lower than New York’s retail rate of $0.22/kWh.
New York also has a 15-year grandfathering period. If you install under current VDER rates, you lock in that compensation for 15 years. This provides certainty but requires careful financial modeling. Battery storage adds value under VDER because you can export during peak demand periods when the “value” is highest.
Florida: Full Retail Net Metering (For Now)
Florida remains one of the strongest net metering states. As of 2026, the state mandates full retail credit for excess solar generation. There is no capacity cap, no monthly fee, and no expiration date on the policy for existing customers. This has fueled explosive solar growth, with Florida adding over 50,000 residential systems in 2025 alone.
Warning: Florida utilities have repeatedly attempted to weaken net metering. In 2022, a bill to phase out retail net metering failed, but it will return. Install now to lock in current rates. There is no grandfathering protection if the law changes—unless you already have a system.
Arizona: The ECC vs. Net Metering Divide
Arizona is a tale of two utilities. APS (Arizona Public Service) and Tucson Electric Power (TEP) have moved to an Export Credit Compensation (ECC) rate of approximately $0.08/kWh. However, they also charge a monthly grid access fee of $21.50–$28.00 for solar customers. This fee alone can add $250–$340 per year to your costs, reducing net savings by 20–30%.
In contrast, Salt River Project (SRP) still offers a form of net metering with a lower monthly fee of $10. If you are in Arizona, your choice of utility (if you have one) is the most important decision you can make.
Compensation Rate & Monthly Fees: The Hidden Costs
Many homeowners focus only on the headline credit rate. The real story is in the fees and non-bypassable charges (NBCs).
Non-Bypassable Charges (NBCs)
Even in states that claim “full retail net metering,” utilities often apply NBCs to the energy you consume from the grid. These charges cover transmission, distribution, and public program costs. In California under NEM 3.0, the NBC is $0.028/kWh. This means even though your export credit is $0.08/kWh, you pay an extra $0.028/kWh on every kWh you pull from the grid. The net effect is a 10–25% reduction in effective savings.
Other states with significant NBCs include New York ($0.015/kWh), Massachusetts ($0.01/kWh), and New Jersey ($0.008/kWh). Always ask your installer to calculate the “effective compensation rate” after accounting for NBCs.
Monthly Fixed Fees
Some utilities impose a fixed monthly charge specifically for solar customers. These are designed to recover grid maintenance costs that solar users “avoid” by generating their own power. Here are the notable examples in 2026:
- Arizona (APS): $21.50/month grid access charge.
- Nevada (NV Energy): $12.00/month net metering fee.
- Utah (Rocky Mountain Power): $15.00/month solar fee.
- Idaho (Idaho Power): $10.00/month standby charge.
A fixed fee of $20/month adds $240/year to your costs. Over a 25-year system life, that is $6,000 in lost savings—enough to buy a battery.
Grandfathering Rules & Transition Timelines
Grandfathering is the legal protection that allows existing solar customers to keep their current rate structure even if the policy changes. Without it, a utility can change your compensation at any time. Here are the key grandfathering periods in major states:
| State | Grandfathering Period | Notes |
|---|---|---|
| California (NEM 2.0) | 20 years | Applies to systems installed before April 2023 |
| Nevada | 20 years | For NEM 1.0 customers; NEM 2.0 customers have 15 years |
| Arizona (APS) | 20 years | For customers on ECC-1 plan |
| New York | 15 years | Applies to current VDER rates |
| Massachusetts | 10 years | Some plans have shorter windows |
| Texas | Varies by contract | Typically 12–24 months with your REP |
Actionable Advice: If your state has no grandfathering, install now. If it has a 20-year grandfathering clause, you have a valuable asset that can be transferred when you sell your home.
Impact on Payback Period (ROI)
The policy structure directly determines how quickly you recoup your investment. For a typical 10 kW system costing $25,000–$30,000 after the federal tax credit, here is how payback varies by policy:
| Policy Type | Example State | Payback Period (Years) | 20-Year Net Savings |
|---|---|---|---|
| Full Retail Net Metering | Florida, New Jersey | 5–7 years | $40,000–$60,000 |
| Net Billing (No Battery) | California NEM 3.0 | 12–15 years | $10,000–$20,000 |
| Net Billing (With Battery) | California NEM 3.0 | 8–10 years | $25,000–$35,000 |
| Low Compensation + High Fee | Arizona APS | 12–18 years | $5,000–$15,000 |
The takeaway is clear: in net billing states, a battery is not optional—it is essential for reasonable returns. In full net metering states, batteries are often a luxury that extends payback.
How Policy Drives Battery Adoption
Competitors often mention that policies change, but they rarely quantify the impact on battery adoption. The data is stark:
- Net Billing States (CA, HI, MA): Battery attach rate > 80% in 2025.
- Full Retail Net Metering States (FL, NJ, OH): Battery attach rate < 20%.
- Mixed States (NY, AZ): Battery attach rate ~40–50%.
In California, the average residential solar system now includes a 10–13 kWh battery. In Florida, most systems are solar-only. If you are in a net billing state, plan on spending an additional $8,000–$12,000 for a battery. Your payback will be faster than without it.
Capacity Caps: The Hidden Enrollment Limit
Several states impose capacity caps that limit how much solar can be installed under net metering before the program closes to new applicants. Once the cap is reached, new customers are moved to a lower compensation rate.
- Illinois: Cap is 5% of peak demand. Once reached, new customers enter a net billing program.
- South Carolina: Cap is 2% of peak demand. The cap was reached in 2024, causing a transition to net billing.
- New Mexico: Cap is 3% of peak demand. Currently at 2.5%—likely to be reached by 2027.
- New York: No cap under VDER.
- California: Cap removed under NEM 3.0, but compensation is already low.
Actionable Advice: If you live in Illinois, South Carolina, or New Mexico, do not wait. The window for full retail net metering is closing. Install before your utility’s cap is reached.
Decision Framework: Should You Install Solar in a Net Billing State?
If you live in a state with net billing (e.g., California, Arizona, Hawaii, Indiana), use this framework to decide if solar is worth it:
- Check your export rate. If it is above $0.05/kWh, a battery is strongly recommended. If it is below $0.03/kWh, you need a battery that covers at least 80% of your nighttime usage.
- Calculate your monthly fixed fee. If it exceeds $20/month, recalculate your ROI. A $20 fee reduces annual savings by $240.
- Model your payback. Use a tool like PVWatts with your specific utility rate. If payback exceeds 12 years, consider a smaller system sized to your daytime consumption only.
- Consider a battery. In net billing states, a battery improves payback by 3–5 years compared to solar-only.
Frequently Asked Questions
Q: Does my state have net metering or net billing?
A: As of 2026, 22 states plus D.C. have full retail net metering: Florida, New Jersey, Massachusetts, Ohio, Maryland, Virginia, and others. 18 states have net billing or avoided-cost rates: California, Hawaii, Indiana, Kentucky, Arizona (for some utilities), and New York. The remaining states have no state mandate, meaning policies vary by utility (e.g., Texas, Nebraska).
Q: How much will I be paid for excess solar energy vs. what I pay for grid power?
A: Under full retail net metering, you receive the same rate you pay—typically $0.10–$0.40/kWh. Under net billing, you receive $0.02–$0.08/kWh. In California under NEM 3.0, the average export credit is $0.08/kWh, while retail rates are $0.30–$0.40/kWh. This 75–80% reduction in compensation is why batteries are now essential in that state.
Q: Will net metering go away in my state and when?
A: Net metering is under constant attack from utilities. Florida utilities have tried to end it every year since 2022. South Carolina’s cap was reached in 2024. Illinois’s cap will likely be reached by 2027. No state has permanently guaranteed net metering. The safest strategy is to install now and lock in current rates for the longest grandfathering period available.
Q: Can I lock in the current net metering rate if I install solar now?
A: Yes, in most states. If you install before a policy change, you are typically grandfathered for 10–20 years. In California, NEM 2.0 customers are grandfathered for 20 years. In New York, VDER rates are locked for 15 years. In Texas, you are locked for the duration of your REP contract (12–24 months). Always get a written guarantee of grandfathering from your installer.
Q: How do net metering policies affect my solar payback period?
A: Dramatically. In a full net metering state like Florida, payback is 5–7 years. In a net billing state like California without a battery, payback extends to 12–15 years. With a battery in California, payback improves to 8–10 years. The policy is the single largest variable in your solar ROI calculation.
Q: What happens if my utility caps net metering enrollment?
A: Once a capacity cap is reached, the utility stops accepting new net metering customers. New applicants are moved to a lower compensation rate—typically net billing at avoided cost. If you are on a waiting list when the cap is reached, you lose access to the higher rate. This is why you should not delay if your state has a cap.
Q: Is net metering worth it if I have a battery storage system?
A: Yes, especially in net billing states. A battery allows you to store your solar energy and use it during peak evening hours when grid rates are highest. In California, a battery improves payback by 3–5 years. In full net metering states, a battery is not necessary for good economics, but it provides backup power during outages. The optimal battery size depends on your policy: in net billing states, size for 80% of your nighttime usage; in net metering states, size for backup only.
Final Advice from Solar Panel Install Pros
The solar net metering landscape in 2026 is a patchwork of policies that vary not just by state, but by utility within a state. The most important step you can take is to check your specific utility’s net metering or net billing rate. Do not rely on a general “state policy” article—including this one—to make your final decision.
If you are in a full retail net metering state, install now to lock in the best economics. If you are in a net billing state, budget for a battery. And if you are in a state with capacity caps, do not wait another month. The window is closing.
At Solar Panel Install Pros, we offer free, personalized ROI calculations based on your exact utility rate and zip code. Contact us today to see how much you can save under your state’s current policies.